diff --git a/lower-constraints.txt b/lower-constraints.txt
index 05948ea..c9cfdfe 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -5,16 +5,13 @@ coverage==4.0
 debtcollector==1.2.0
 extras==1.0.0
 fixtures==3.0.0
-flake8==2.5.5
 gitdb==0.6.4
 GitPython==1.0.1
-hacking==0.12.0
 iso8601==0.1.11
 Jinja2==2.10
 keystoneauth1==3.4.0
 linecache2==1.0.0
 MarkupSafe==1.0
-mccabe==0.2.1
 mox3==0.20.0
 msgpack-python==0.4.0
 netaddr==0.7.18
@@ -27,8 +24,6 @@ oslo.serialization==2.18.0
 oslo.utils==3.33.0
 oslotest==3.2.0
 pbr==2.0.0
-pep8==1.5.7
-pyflakes==0.8.1
 pyparsing==2.1.0
 python-mimeparse==1.6.0
 python-subunit==1.0.0